Hi and thanks for your question. This is the first report of this bug we've gotten, and we did not notice it in testing. It is not working correctly in 1.4.2.
The Workaround
The workaround is to select "force not stepper" to be ON for the supercontrol momentary button.

This will be fixed in 1.4.3. If you find other problems (or questions), please let us know.
Thanks!